Assume that the Pepsi Zero market is initially in equilibrium, and then the demand for Pepsi Zero increases. The increase in the demand for Pepsi Zero will: O a. cause a surplus of Pepsi Zero initially (at the old price), and price will decrease to the new equilibrium level. O b. cause a shortage of Pepsi Zero initially (at the old price), and price will decrease to the new equilibrium level. O c. cause a shortage of Pepsi Zero initially (at the old price), and price will increase to the new equilibrium level, O d. cause a surplus of Pepsi Zero initially (at the old price), and price will increase to the new equilibrium level